 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 590 USB SERIAL CONTROLLER FOR LINEAR TECHNOLOGY QUICKEVALTM DEMO BOARDS DESCRIPTION Demonstration circuit 590 is a USB-based digital controller with generic Serial Peripheral Interface (SPI) and Inter Integrated Circuit (I2CTM) ports. It is designed to mate with Linear Technology's family of QuickEvalTM demonstration boards. The demo board is fully isolated from the host PC's ground, and in many cases no external power source is required. The evaluation software automatically detects which demo board is connected and loads the appropriate control screen. This system facilitates quick performance evaluation of a variety of products, including ADCs, DACs, SMBus power control products, and others. Figure 1 shows a block diagram of DC590. Power and digital signal connections are made via a 14-conductor ribbon cable. In many cases the controller can provide power for the demonstration circuit as well as digital signals. The demonstration circuit connections are fully isolated from the host PC's ground (earth ground.) Four of the fourteen ribbon-cable conductors are referred to earth ground. Thus the isolation barrier is not designed to withstand large potential differences. QuickEval is a trademark of Linear Technology Corporation; I C is a trademark of Philips Electronics N.V.; Adobe is a trademark of Adobe Systems, Inc. 2 DATA ISOLATION (AGILENT HCPL-2300) 4 DATA I/O USB PORT AUXILIARY BOARD ID LINES USB TO I2C/SPI CONTROLLER v+ 14-PIN CONNECTOR POWER MANAGEMENT EXTERNAL POWER SWITCHER SHUTDOWN (JP1) LT1761 vcc 5V GND Figure 1. Block Diagram of Demonstration Circuit 590 1 QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 590 USB SERIAL CONTROLLER FOR LINEAR TECHNOLOGY QUICKEVALTM DEMO BOARDS Figure 2. Basic Connection QUICK START PROCEDURE For proper equipment setup, follow the procedure below: 1. Do not plug in DC590 before running the installation NOTE: The QuickEval demo software requires a PC that is running Windows 98 (or later), and has an available USB port. 4. Connect the demonstration circuit to be evaluated to program. 2. Download the QuickEval installation program from http://www.linear.com/software/. 3. Run the QuickEval installation program and follow the DC590 using the supplied 14-conductor ribbon cable. The demo software detects the circuit and starts the appropriate control screen. Each demonstration board also comes with a Quick Start guide similar to this one. For usage details relevant to a particular circuit refer to its Quick Start Guide. on-screen instructions. 2 QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 590 USB SERIAL CONTROLLER FOR LINEAR TECHNOLOGY QUICKEVALTM DEMO BOARDS USEFUL SOFTWARE TOOLS The QuickEval Demo software includes tools for automatic software updates and for quickly retrieving relevant documentation from the World Wide Web. The Download Datasheets feature is particularly useful to laptop users, who can use this feature to download the data sheets and Quick Start guides in one step, thus making them available even when the laptop is not connected to the internet. NOTE: Adobe Acrobat reader is required to view the To update the software (requires internet connection): Choose Update from the Tools menu. This automatically updates the main program and drivers for individual demo circuits. To view the Quick Start Guide: Choose Quick Start Guide from the Tools menu. To retrieve data sheets (requires internet connection): Choose Download Datasheets from the Tools menu. All datasheets and Quick Start guides for all products in the QuickEval family are downloaded to the QuickEval program folder and placed in the dsheets folder. documents and is available at http://www.adobe.com. To use the tools: Quit the demonstration circuit software or disconnect the USB cable. The main control panel appears. OPTIONAL CONNECTIONS TO THE DC590 In most cases DC590 and the demonstration circuit under evaluation can operate from available USB power, and thus require nothing more than a USB connection to the host PC and a ribbon connecting DC590 to the demo circuit under evaluation. Figure 2 shows this basic connection. DC590 offers several other power options, described below. Isolated supply options An external power supply is recommended to reduce the load on the host computer's USB port, especially in the event of faults or short circuits. An LT1425 switching power supply provides isolated power to the demonstration circuit under evaluation and to the isolation circuitry. The LT1425 switching power supply is enabled by default but may be disabled by moving jumper JP1 (ISOL PWR) to the OFF position. This allows the isolated side 3 QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 590 USB SERIAL CONTROLLER FOR LINEAR TECHNOLOGY QUICKEVALTM DEMO BOARDS of the board and the demonstration circuit under evaluation to be powered separately. This is recommended when testing precision components such as high resolution ADCs and DACs. Figure 3 shows how to connect an external supply to the isolated side of the controller and the board under evaluation. After disabling the switching supply, apply 7V-9V between the GND and V+ posts. These posts are the in, out, and ground terminals of an LT1761 LDO regulator. The demonstration circuit under evaluation may draw up to 100mA from VCC. 7V REGULATED SUPPLY DEMONSTRATION CIRCUIT UNDER EVALUATION 14-CONDUCTOR RIBBON CABLE USB CABLE TO HOST PC Figure 3. Connecting an external supply to the isolated side of the controller Another option is to supply power to the isolated side of the controller (see Figure 4) back through the board under evaluation. The LT1761 regulator is reverse-current protected. This allows any convenient 5V 10% regu- lated supply to be used. In this case, the isolation circuitry on DC590 is also powered from this source. worst-case current draw by DC590 is 50mA. 5V REGULATED SUPPLY DEMONSTRATION CIRCUIT UNDER EVALUATION 14-CONDUCTOR RIBBON CABLE USB CABLE TO HOST PC Figure 4. Supplying power to the controller through the board under evaluation 4 QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 590 USB SERIAL CONTROLLER FOR LINEAR TECHNOLOGY QUICKEVALTM DEMO BOARDS LED INDICATORS Two LED indicators are provided. The "ISOL PWR" LED is lit when either the onboard switching power supply is running or external power is applied to the isolated side of the board. The "COMMAND" LED indicates that a command has been sent to the board by the host PC and is waiting to be executed. The LED may not appear to be blinking in some cases, as the duty cycle may be very short. CIRCUIT DETAILS Schematics for the isolated power supply and optical signal isolation are attached to the end of this Quick Start Guide. Example microcontroller code is devicespecific, and may be included in the Quick Start Guide for the demonstration circuit under evaluation. OPTICAL ISOLATION The optical isolation scheme based on the Agilent HCPL 2300 high speed opto isolator and is designed to allow bidirectional SPI and I2C communications. Isolation schemes that are designed for only SPI or I2C will differ slightly. Contact Linear Technology Applications Engineering for more information. SWITCHING POWER SUPPLY The onboard switching supply is based on the LT1425 flyback regulator. Feedback is taken from the primary side of T1, eliminating the need for optical feedback. T2 and C9 provide common mode filtering. Refer to the LT1425 data sheet for details of operation. TROUBLESHOOTING GUIDE Problem: DC590 is plugged in, but QuickEval screen still says "USB Serial Controller Not Connected" Solution: The most likely cause is improper installation of the USB drivers, which causes Windows to recognize DC590 as an "Unknown Device." Open the Windows Control Panel, open "System" and click the "Device manager" tab. Open the "Other Devices" item and look for USB SERIAL CONTROLLER. Select this item and click the remove button. Unplug DC590, Re-install the QuickEval software, and follow the on-screen instructions. Problem: Demo board software loads properly, but will not run or gives "Device Not accessible" errors. Solution: Verify that the demo board is properly powered up. This Quick Start Guide lists the basic power connections to DC590. Some demo boards may have additional requirements; refer to the demo board's Quick Start guide for details. Problem: After connecting the demo board to DC590 with the supplied 14 pin ribbon cable, QuickEval software still displays "Evaluation Board is not Connected." Solution: Contact Linear Technology Applications Engineering. 5 5 4 3 2 1 VCC D C1 220PF D1 ZHCS1000 VCC R3 17.8K R4 75 U2 1 2 3 4 5 GND NC GND 16 SHDN 15 C6 220PF T1 CTX02-13483 4 3 1 1 2 3 R1 75 E3 7V ISO_PWR U1 IN GND BYP 4 SHDN LT1761ES5-5 VCCA OUT 5 C4 OPT C5 2.2,16V 1206 2 R2 1.5K E1 5V ISO_PWR_SHDN/ R13 2K R6 20K D 1 1 C2 2.2,16V 1206 2 T2 CTX8-1P 4 3 C3 4.7,16V 1206 2 3 3 JP1 ISOL PWR 1 ON 2 OFF ISOL PWR LED1 LN1351C GREEN E2 GND R5 100K 1 RFB ROCOMP 14 VC RCCOMP 13 RREF SYNC VIN 12 VSW 11 C C C7 R7 1000PF 3.01K 6 7 8 SGND PGND 10 GND 9 GND LT1425CS C8 0.1 R8 15K C9 0.1,50V 0805 ISOLATED SECTION B J1 CUI, PJ-002A WALL ADAPTER INPUT 1 + U3 LT1129CST-5 D6 ZHCS1000 1 3 VIN R9 10K C10 0.1 1 IN 4 GND 2 OUT 3 GND C11 22,6.3V 1210 PLACE CLOSE TO LT1425CS VCC B 3 2 NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603. 2. INSTALL SHUNT ON JP1 PIN 2 AND 3. CONTRACT NO. APPROVALS DRAWN: CHECKED: APPROVED: ENGINEER: MARK T. DESIGNER: KIM T. E4 VIN 7-12V USBVCC VCC 2 Q1 FDN306P 3 USBVCC E5 GND LTC4412ES6 A 1 - 1 VIN SENSE 6 2 GND GATE 5 3 CTL STAT 4 U4 TECHNOLOGY TITLE: 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only A USB SERIAL CONTROLLER DWG NO. SIZE A DATE: 2 DC590A-1 SHEET 1 REV A 1 OF 3 Wednesday, December 18, 2002 5 4 3 5 4 3 2 1 R22 VCCA 2K U8 8 7 6 5 VCC RL NC 1 ANODE 2 VCC R23 4.99K,1% SCK R24 4.99K,1% D ISOLATED SECTION D VOUT CATHODE 3 GND NC 4 EESCK EESDA ISO_PWR R26 VCCA 4.99K,1% J4 1 2 3 4 5 C HCPL-2300 R25 OPT U9 8 7 6 5 ISO_SCL ISO_MISO ISO_CS/ ISO_SDA/MOSI VCC EESDA EESCK VCCA R30 R31 49.9K 49.9K 1% 1% R35 2K R32 169 VCCA 8 7 6 5 R29 OPT U10 VCC RL NC 1 ANODE 2 VCC R33 4.99K,1% 3 VCC RL NC 1 ANODE 2 VCC R27 4.99K,1% NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VCCA VOUT CATHODE 3 GND NC 4 CS/ VCC VCC C18 0.1 C HCPL-2300 R28 OPT C17 0.1 6 7 8 9 10 11 12 13 14 MOSI D3 BAT54A 2 1 VCC 4 5 6 U11 V+ OUT SHDN LT1719CS6 +IN 3 V- 2 -IN 1 VCC R34 11.5K TP2 R36 1K VOUT CATHODE 3 GND NC 4 HD2X7-079-MOLEX HCPL-2300 R37 OPT U12 D4 BAT54A 2 1 3 VCCA 1 R40 4.99K,1% 2 3 4 NC ANODE VCC 8 RL 7 VCC VCC R38 2K B VCCA R39 11.5K TP1 R42 1K 3 2 1 U13 +IN V-IN V+ 4 OUT 5 SHDN 6 VCCA SPI_I2C/ B CATHODE VOUT 6 NC GND 5 R41 169 SDA LT1719CS6 HCPL-2300 R43 OPT MISO JP2 OPT JP3 OPT JP4 OPT JP5 OPT 1 1 1 1 2 2 2 2 VCCA VCCA VCCA VCCA VCCA C19 0.1 A CONTRACT NO. APPROVALS DRAWN: CHECKED: APPROVED: ENGINEER: MARK T. DESIGNER: KIM T. C20 0.1 C21 0.1 C22 0.1 C23 0.1 VCCA JP7 OPT JP6 OPT JP8 OPT VCC 2 2 2 1 1 1 TECHNOLOGY TITLE: 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only A USB SERIAL CONTROLLER DWG NO. SIZE A DATE: 2 DC590A-1 SHEET 1 REV A 3 OF 3 Wednesday, December 18, 2002 5 4 3 Linear Technology Corporation USB SERIAL CONTROLLER ENG: MARK THOREN (25-30) BILL OF MATERIALS DC590A-1 QTY-525 11/9/2004 11:18 AM Item Qty Reference 1 2 C1,C6 2 2 C2,C5 3 1 C3 4 0 C4 5 2 C7,C25 6 14 C8,C10,C12-C15,C17-C24 7 1 C9 8 1 C11 9 1 C16 10 2 D1,D6 11 4 D2,D3,D4,D5 12 5 E1,E2,E3,E4,E5 13 1 JP1 14 1 SHUNTS FOR JP1 15 0 JP2-JP8 16 1 J1 17 1 J2 18 1 J3 19 1 J4 20 2 LED1,LED2 21 1 Q1 22 1 Q2 23 3 RN1,RN2,RN3 24 2 R1,R4 25 3 R2,R14,R19 26 1 R3 27 2 R5,R18 28 1 R6 29 1 R7 30 1 R8 31 7 R9,R11,R21,R44,R47,R48,R49 32 5 R10,R36,R42,R45,R46 33 1 R12 34 4 R13,R22,R35,R38 35 2 R16,R17 36 1 R20 37 6 R23,R24,R26,R27,R33,R40 Part Description CAP., NPO 220PF 50V 10% CAP., X5R 2.2UF 16V 10% CAP., X7R 4.7UF 16V, 20%, 1206 CAP., 0603 CAP., X7R 1000PF 100V 10% CAP., X7R 0.1UF 16V 10% CAP., X7R 0.1UF 50V 10% CAP., X7R 22UF 6.3V, 20%, 1210 CAP., X7R 0.01UF 100V 10% DIODE, SCHOTTKY BAT,SOT23 DIODE,SCHOTTKY, SOT23 TESTPOINT, TURRET, 0.064" JMP, 3PIN 1 ROW .079CC SHUNT, .079" CENTER JMP, 2PIN 1 ROW .100CC CONN, DC PWR JACK,2.00mm CON, USB-B, 4 PINS, SINGLE THR. HOLE HEADER, 2X3PIN, 0.079CC HEADER, 2X7PIN, 0.079CC LED, GREEN, 1206 MOSFET, P-CH, SOT3 TRANS, NPN, MMBT3904, SOT23 RES, 2X4 ARRAY, 330 OHM, CONVEX-SQ RES., Chip 75 1/16W 5%,0603 RES., Chip 1.5K 1/16W 5%,0603 RES., Chip 17.8K 1/16W 1%,0603 RES., Chip 100K 1/16W 1%,0603 RES., Chip 20K 1/16W 5%,0603 RES., Chip 3.01K 1/16W 1%,0603 RES., Chip 15K 1/16W 1%,0603 RES., Chip 10K 1/16W 1% ,0603 RES., Chip 1K 1/16W 5%,0603 RES., Chip 470 1/16W 5%,0603 RES., Chip 2K 1/16W 5%,0603 RES., Chip 10 1/16W 5%,0603 RES., Chip 2.2K 1/16W 5%,0603 RES., Chip 4.99K 1/16W 1%,0603 Manufacture / Part # AVX, 06035A221KAT1A AVX, 1206YC225KAT1A TAIYO YUDEN, EMK316BJ475MLT OPT AVX, 06035C102KAT1A AVX, 0603YC104KAT1A AVX, 08055C104KAT1A TAIYO YUDEN, JMK325BJ226MMT AVX, 06031C103KAT1A ZETEX, ZHCS1000 DIODES INC., BAT54A-7 MILL-MAX, 2308-2 COMM-CON, 2802S-03-G1 COMM-CON CCIJ2MM-138G COMM-CON, 3801S-02-G1 CUI-STACK, PJ-002A MILL-MAX, 897-30-004-90-000 COMM CON, 2202S-06G2 MOLEX, 87331-1420 PANASONIC, LN1351C-(TR) FAIRCHILD SEMI., FDN306P DIODES, MMBT3904 AAC, CRN16-4V-331JCM AAC, CR16-750JM AAC, CR16-152JM AAC, CR16-1782FM AAC, CR16-1003FM AAC, CR16-203JM AAC, CR16-3011FM AAC, CR16-1502FM AAC, CR16-1002FM AAC, CR16-102JM AAC, CR16-471JM AAC, CR16-202JM AAC, CR16-100JM AAC, CR16-222JM AAC, CR16-4992FM Page 1 - of - 2 Linear Technology Corporation USB SERIAL CONTROLLER ENG: MARK THOREN (25-30) BILL OF MATERIALS DC590A-1 QTY-525 11/9/2004 11:18 AM Item Qty Reference 38 0 R25,R28,R29,R37,R43 39 2 R30,R31 40 2 R32,R41 41 2 R34,R39 42 1 SW1 43 0 TP1,TP2,TP3 44 1 T1 45 1 T2 46 1 U1 47 1 U2 48 1 U3 49 1 U4 50 1 U5 51 1 U6 52 1 U7 53 4 U8,U9,U10,U12 54 2 U11,U13 55 1 U14 56 1 Y1 57 1 Y2 Part Description RES., 0603 RES., Chip 49.9K 1/16W 1%,0603 RES., Chip 169 1/16W 1%,0603 RES., Chip 11.5K 1/16W 1%,0603 SWITCH, LIGHT TOUCH, 2 PINS TP, .070" SMT TRANSFORMER, OCTA-PAC TRANSFORMER, OCTA-PAC I.C., LT1761ES5-5, SOT23-5 I.C., LT1425CS, SO16 I.C., LT1129CST-5, SOT223 I.C., LTC4412ES6, SOT23-6 I.C., PIC16F76, SSOP28G I.C., FT245BM, LQFP32 I.C., 93C46BSM, SO8 I.C., HCPL-2300, DIP8 I.C., LT1719CS6, SOT23-6 I.C., NL17SZ74US, US8 RESONATOR, 10MHz, Y-PANA-EFOMC RESONATOR, 6MHz, CSTLS6M00G Manufacture / Part # OPT AAC, CR16-4992FM AAC, CR16-1690FM AAC, CR16-1152FM PANASONIC, EVQPPDA25 OPT COILTRONICS, CTX02-13483 COINTRONICS, CTX8-1 LINEAR TECH., LT1761ES5-5 LINEAR TECH., LT1425CS LINEAR TECH., LT1129CST-5 LINEAR TECH., LTC4412ES6 MICROCHIP, PIC16F76 FUTURE TECH., FT245BM MICROCHIP, 93C46BSM AGILENT TECH., HCPL-2300 LINEAR TECH., LT1719CS6 ON SEMI., NL17SZ74US PANASONICS, EFOMC1005T4 MURATA, CSTLS6M00G NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS. 2. INSTALL SHUNT ON JP1 PIN 2 AND 3. Page 2 - of - 2 |
Price & Availability of DC590A-1
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |